LG Display Patente

A touch panel driving device that can easily perform a force sensing drive with a touch drive unit and a force drive unit that can be integrally formed in one-chip, a touch panel device can include the one-chip touch panel drive device, and a driving method thereof are provided. The touch panel device can include a bypass path that supplies a second touch sensing signal to a drive unit without passing through a sensing unit. Accordingly, the touch panel device can perform both touch sensing based on a first touch sensing signal and force sensing based on a second touch sensing signal using a single drive unit and prevent an erroneous second touch sensing signal from being transmitted to the drive unit due via the sensing unit, thereby easily and more accurately performing the force sensing.

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A display device is described that has reduced resistance in one or more of the gate, common, data electrical lines (GL, CL, DL) that control the operation of the pixels of the display device. Reduced resistance is achieved by forming additional metal and/or metal-alloy layers (AGL, ACL, ADL) on the gate, common, and/or data lines (GL, CL, DL) in such a manner so that the cross-sectional area of those lines (GL, CL, DL) is increased. As a consequence, each such line is formed so as to be thicker than could otherwise be achieved without causing defects in the rubbing process of an alignment layer. Additionally, no widening of these lines is needed, thus preserving the aspect ratio of the device. The gate insulating and semiconducting layers (GI, SE) that in part make up the thin film transistors (TFT) that help control the operation of the pixels of the device may also be designed to take into account the increased thickness of the lines.

A touch sensor integrated display device and a method for driving the same are disclosed. The touch sensor integrated display device includes a display panel (10), in which a pixel array is virtually divided into a plurality of touch blocks (BL1, BL2, BL3, BL4), each touch block includes pixels (P) displaying an input image and at least one sensing target dummy pixel (TPXL) sensing a touch input, and the sensing target dummy pixel (TPXL) includes a driving TFT controlling a source-drain current based on a gate-source voltage, and a panel drive circuit, which in a touch sensing period (TSEN), supplies a scan control signal and a sensing control signal to the sensing target dummy pixel (TPXL) and sets the gate-source voltage suitable to turn on the driving TFT by applying a touch driving data voltage to a gate node (Ng) of the driving TFT and applying a reference voltage to a source node (Ns) of the driving TFT.

Disclosed herein are an OLED display panel (410) further including a switching transistor (T-SW) for controlling application of supply voltage (VDD_EL) in the initializing interval of a pixel (P), an OLED display device including the same, and a method for driving the same. The OLED display panel (410) avoids a short-circuit between supply voltage VDD_EL and reference voltage Vref to thereby reduce initialization voltage applied to the gate terminal of the driving transistor T_dr. The OLED display device can achieve various effects such as improved response characteristics of pixels by reducing deviation in the initial voltage used in sampling.

The present disclosure provides a display device including a display panel and a scan driver. The display panel displays an image. The scan driver includes a scan signal generation circuit disposed on one side of the display panel, and an emission signal generation circuit disposed on the other side of the display panel. The emission signal generation circuit outputs an emission signal having at least two Logic High sections in response to an external clock signal and a first scan signal output from the scan signal generation circuit.

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A touch sensor integrated type display device includes a plurality of gate lines and a plurality of data lines which cross over each other and form a plurality of pixel areas, a plurality of first electrodes arranged in parallel with one another in a first direction, a plurality of second electrodes which are formed on the same layer as the first electrodes and are arranged in parallel with one another in the first direction and a second direction crossing the first direction, and a plurality of pixel electrodes which are formed on a layer different from the first and second electrodes in the pixel areas and are positioned opposite the first and second electrodes. The first electrodes and the second electrodes arranged in parallel with one another in the first direction are alternately disposed every m electrode lines, where m is a natural number.

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A light guide plate (210) in accordance with various embodiments comprises: a body (211) having a light incident part (210a) at a first side surface of the body (211); an upper optical pattern (213) at a top side of the body (210); and a lower optical pattern (215) at a bottom side of the body (210), wherein the lower optical pattern (215) is an embossed pattern protruding from the bottom side of the body (211) and having a trapezoid shape, wherein a first end of the trapezoid shape has a first width and a second end of the trapezoid shape has a second width, wherein the first end is closer to the light incident part (210a) than the second end, and wherein the first width is narrower than the second width. In one embdiment the upper optical pattern comprises a plurality of lenticular lens patterns or round prism patterns extending in parallel along a direction from the first side surface of the body to an opposite second side surface, and an interval of first lenticular lens patterns or round prism patterns disposed in a partial luminance area (PLA) of the light guide plate differs from an interval of second lenticular lens patterns or round prism patterns in an area of the light guide plate other than the PLA. In another embodiment the loight incident part includes a side light collection pattern (217) and a side diffusion pattern (219), wherein the side light collection pattern includes a plurality of lenticular lens patterns in a PLA corresponding to a partial display area and wherein the side diffusion pattern includes a plurality of prism patterns in a surrounding area of the PLA. A backlight unit comprising the light guide plate is configured to irratdiate light selectively onto a whole display area of a liquid crystal display panel or onto a partial display area thereof, and futher comprises a light source unit adjacent the light incident part of the light guide plate.